Reaction A + B → C + D follow's following rate law :
rate = .
Starting with initial concentration of one mol of A and B each, what is the time taken for amount of A of become 0.25 mol. Given k = 2.31 × 10–3 sec–1.
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A + B → C + D
t = 0 1 1
‘t’ 1-x 1-x x x
rate = k[A]½ [B]½
When [A] = 0.25
x = 0.75